Methyl 5-methoxy-3-oxo-2,3-dihydro-1H-indene-4-carboxylate CAS 33521-63-0
| CAS No. | 33521-63-0 |
| Molecular Formula | C12H12O4 |
| Molecular Weight | 220.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Methyl 5-methoxy-3-oxo-2,3-dihydro-1H-indene-4-carboxylate (CAS 33521-63-0), molecular formula C12H12O4 and molecular weight 220.22 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, Methyl 5-methoxy-3-oxo-2,3-dihydro-1H-indene-4-carboxylate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 220.22 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), Methyl 5-methoxy-3-oxo-2,3-dihydro-1H-indene-4-carboxylate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C12H12O4 |
| Molecular Weight | 220.22 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
Related Methyl Standards
- Ethyl 5-methoxy-1H-pyrrolo[2,3-b]pyridine-2-carboxylate (CAS 1045856-81-2)
- 7-methoxy-3,5-dimethyl-1-benzofuran-2-carboxylic acid (CAS 1094253-79-8)
- Methyl 6-methoxy-2-methyl-2H-indazole-3-carboxylate (CAS 1150618-48-6)
- Methyl 6-methoxy-2h-chromene-8-carboxylate (CAS 1221724-24-8)
- Methyl 4-methoxy-2-methyl-2H-indazole-6-carboxylate (CAS 1245215-47-7)
- 5-Methoxy-2,3-dimethyl-7-nitro-1H-indole (CAS 1262434-36-5)
- (5-Methoxy-1H-indazol-3-yl)-acetic acid methyl ester (CAS 1303968-39-9)
- Methyl 7-methoxy-3-oxo-2,3-dihydro-1h-indene-1-carboxylate (CAS 134111-88-9)
Recommended Standards
- Methyl 5-methoxy-3-methylbenzofuran-2-carboxylate (CAS 20037-18-7)
- Methyl 6-amino-5-methoxy-1H-indole-2-carboxylate (CAS 78939-36-3)
- Methyl 5-methoxy-2-methylbenzofuran-3-carboxylate (CAS 384365-25-7)
- Methyl 6-methoxy-1-oxo-2,3-dihydro-1h-indene-2-carboxylate (CAS 22955-78-8)
- 2-(Bromomethyl)-5-ethyl-1,3-dimethylbenzene (CAS 97536-11-3)
- 2-([(tert-Butoxy)carbonyl]amino)-2-(4-methylcyclohexyl)acetic acid (CAS 182292-07-5)
- 4-Methoxy-2-(methylsulfonyl)benzo[d]thiazole (CAS 1334368-43-2)
- (Octahydroindolizin-3-yl)methanamine (CAS 80709-12-2)
- 1,1,3,3-Tetramethylguanidine hydrochloride (CAS 1729-17-5)
- 3-(1H-1,2,3-Triazol-5-yl)aniline dihydrochloride (CAS 1461706-10-4)
- (R)-(+)-1-Ethyl-2-pyrrolidinecarboxamide (CAS 381670-32-2)
- Ferric maltol Impurity 1 (CAS CATO-C4X-32081)
- 2-Methoxy-4-(octa-1,2-dien-1-yl)hexahydro-2H-cyclopenta[b]furan-5-ol (CAS 65791-18-6)
- Semaglutide impurity 44 (CAS CATO-C4X-222644)
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